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  1. 22 9月, 2005 2 次提交
  3. 13 9月, 2005 4 次提交
  5. 09 9月, 2005 7 次提交
  7. 30 7月, 2005 3 次提交
  9. 15 7月, 2005 1 次提交
  11. 13 7月, 2005 3 次提交
  13. 28 6月, 2005 1 次提交
  15. 21 6月, 2005 1 次提交
  17. 09 6月, 2005 1 次提交
    • I
      [PATCH] USB: ftdi_sio: avoid losing received data in tty-ldisc · 76854cea
      由 Ian Abbott 提交于 
      ftdi_sio: Avoid losing bytes at tty-ldisc.

This patch was originally developed by Daniel Smertnig.  I
(Ian Abbott) made a few changes.  It has been tested by both
Daniel and I, at least for raw, non-canonical receive data
processing.

Here is Daniel's original description of the patch:

===
During a project in which I was using a FTDI 232BM to
transmit data at relative high speeds (625kBit/s), I
noticed a problem where data was lost even if flow
control was enabled: The FTDI-Driver receives 512 Bytes
of data over USB at a time, which consists of 8 64-Byte
packets. Subtracting the 2 bytes of status information
included in each packet this gives 496 "real" data
bytes per read.

This data is passed (indirectly, via the flip buffers)
to the tty line discipline which takes care of
throttling when there the free buffer space reaches
TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver
processes up to 496 bytes at a time, throttling won't
happen in time and the line discipline will discard the
remaining bytes.

To avoid this the patch passes data in 62-byte blocks
to the tty layer and checks the available space in the
ldisc-buffers. If there isn't enough free space,
processing the rest of the data is delayed using a
workqueue.

Note: The original problem should be easily
reproducible with a userspace program which does slow &
small reads.
===
Signed-off-by: NIan Abbott <abbotti@mev.co.uk>
Signed-off-by: NDaniel Smertnig <daniel.smertnig@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      76854cea
  19. 03 6月, 2005 2 次提交
    • C
      [PATCH] USB: CP2101 Add support for flow control · 39a66b8d
      由 Craig Shelley 提交于 
      Added support to get/set flow control line levels using TIOCMGET and
TIOCMSET.
Added support for RTSCTS hardware flow control.
cp2101_get_config and cp2101_set_config modified to support long request
strings, required for configuring flow control.

Signed-off-by: Craig Shelley craig@microtron.org.uk
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      39a66b8d
    • M
      [PATCH] USB: add Option Card driver · 58cfe911
      由 Matthias Urlichs 提交于 
      This patch adds a new driver for "Option" cards.  This is a GSM data card,
controlled by three "serial ports" which are connected via an OHCI adapter,
all located on an oversized PC-Card.  It's sold by several GSM service
providers.

Traditionally, this card has been accessed via the standard serial driver
and appropriate vendor= and product= options.  However, testing has
revealed several problems with this approach, including hung data transfers
and lost data blocks when receiving.

Therefore, I've written a separate driver.
Signed-off-by: NMatthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      58cfe911
  21. 01 6月, 2005 2 次提交
  23. 17 5月, 2005 1 次提交
  25. 04 5月, 2005 5 次提交
  27. 23 4月, 2005 2 次提交
  29. 19 4月, 2005 5 次提交